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https://github.com/UpsilonNumworks/Upsilon.git
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112 lines
2.9 KiB
C++
112 lines
2.9 KiB
C++
#include <escher/scroll_view_indicator.h>
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#include <escher/palette.h>
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extern "C" {
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#include <assert.h>
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}
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#include <cmath>
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ScrollViewIndicator::ScrollViewIndicator() :
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View(),
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m_color(Palette::GreyDark),
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m_margin(14)
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{
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}
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ScrollViewBar::ScrollViewBar() :
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ScrollViewIndicator(),
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m_offset(0),
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m_visibleLength(0),
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m_trackColor(Palette::GreyMiddle)
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{
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}
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bool ScrollViewBar::update(KDCoordinate totalContentLength, KDCoordinate contentOffset, KDCoordinate visibleContentLength) {
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float offset = contentOffset;
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float visibleLength = visibleContentLength;
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offset = offset / totalContentLength;
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visibleLength = visibleLength / totalContentLength;
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if (m_offset != offset || m_visibleLength != visibleLength) {
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m_offset = offset;
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m_visibleLength = visibleLength;
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markRectAsDirty(bounds());
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}
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return visible();
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}
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void ScrollViewHorizontalBar::drawRect(KDContext * ctx, KDRect rect) const {
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if (!visible()) {
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return;
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}
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ctx->fillRect(
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KDRect(
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m_margin, (m_frame.height() - k_indicatorThickness)/2,
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totalLength(), k_indicatorThickness
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),
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m_trackColor
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);
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ctx->fillRect(
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KDRect(
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m_margin+m_offset*totalLength(), (m_frame.height() - k_indicatorThickness)/2,
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std::ceil(m_visibleLength*totalLength()), k_indicatorThickness
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),
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m_color
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);
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}
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void ScrollViewVerticalBar::drawRect(KDContext * ctx, KDRect rect) const {
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if (!visible()) {
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return;
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}
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ctx->fillRect(
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KDRect(
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(m_frame.width() - k_indicatorThickness)/2, m_margin,
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k_indicatorThickness, totalLength()
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),
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m_trackColor
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);
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ctx->fillRect(
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KDRect(
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(m_frame.width() - k_indicatorThickness)/2, m_margin+m_offset*totalLength(),
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k_indicatorThickness, std::ceil(m_visibleLength*totalLength())
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),
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m_color
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);
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}
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ScrollViewArrow::ScrollViewArrow(Side side) :
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m_visible(false),
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m_arrow(side)
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{
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}
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bool ScrollViewArrow::update(bool visible) {
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if (m_visible != visible) {
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markRectAsDirty(bounds());
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}
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m_visible = visible;
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return visible;
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}
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void ScrollViewArrow::drawRect(KDContext * ctx, KDRect rect) const {
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ctx->fillRect(bounds(), m_backgroundColor);
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KDSize arrowSize = KDFont::LargeFont->glyphSize();
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const KDPoint arrowAlign = KDPoint(
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(m_arrow == Top || m_arrow == Bottom) * (m_frame.width() - arrowSize.width()) / 2,
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(m_arrow == Left || m_arrow == Right) * (m_frame.height() - arrowSize.height()) / 2
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);
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char arrowString[2] = {m_arrow, 0}; // TODO Change when code points
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ctx->drawString(arrowString, arrowAlign, KDFont::LargeFont, m_color, m_backgroundColor, m_visible);
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}
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#if ESCHER_VIEW_LOGGING
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const char * ScrollViewIndicator::className() const {
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return "ScrollViewIndicator";
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}
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void ScrollViewIndicator::logAttributes(std::ostream &os) const {
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View::logAttributes(os);
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os << " offset=\"" << m_offset << "\"";
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os << " visibleLength=\"" << m_visibleLength << "\"";
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}
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#endif
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